//
// Created by 51165 on 2025/10/22.
//
#include <stdio.h>
int main() {
    int n = 10;
    int arr[10] = {0};
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }
    int sum = 0;
    for (int i = 0; i < n; i++) {
        sum += arr[i];
    }

    int con = sum / n;
    printf("%d\n", con);
    return 0;
}